a concentrated solution of a common reagent that can be diluted and used in reactions is called a\n○ molar…

a concentrated solution of a common reagent that can be diluted and used in reactions is called a\n○ molar solution.\n○ regular solution.\n○ shelf solution.\n○ stock solution.\ndone
Answer
Brief Explanations:
A stock solution is a concentrated solution of a common reagent that can be diluted for use in reactions. A molar solution is defined by its molar - concentration. There are no standard terms like regular solution or shelf solution in this context.
Answer:
D. stock solution